Single-port and reduced-port laparoscopic gastrectomy are complex and it is difficult to complete this surgical procedure for gastric cancer. Therefore, it is essential for many gastric surgeons to learn safe and effective the surgical procedures from the authorized laparoscopic surgeons in this field. Here comes this his issue on "Advancement of Single-port, Reduced-port Laparoscopic Gastrectomy for Gastric Cancer" guest edited by Dr. Chikara Kunisaki.